Sony's recurring security headaches (week in review)

After nearly four weeks offline, Sony relaunched its PlayStation Network, but not without continuing hurdles.

The entertainment and electronics giant began returning its entire portfolio of online games, game forums, and Web sites to service last weekend. But shortly after service resumed, users started complaining on Twitter that it wasn't active long before it was unavailable again.

Windows users are familiar with the fake anti-malware ruse, but this is the first time it's been targeted at the smaller Mac market. CNET tells you what Mac Defender is and what it means for Macintosh users.
 How to remove MacDefender fake antivirus program